Good day, I have a sensor which supports serial data output using RS422 which has 4 wires (RX+, RX-, TX+, TX-) my question is how can I connect this sensor to the Arduino. I read that i can use 2 max485 chips to do this but uncertain of the exact procedure. Thanks in advance.
asked Mar 11, 2018 at 16:15
-
This is not really an arduino question, for of an Electrical Engineering question, this should help electronics.stackexchange.com/questions/280073/…Chad G– Chad G2018年03月12日 16:19:16 +00:00Commented Mar 12, 2018 at 16:19
2 Answers 2
There are pre-made and very inexpensive Arduino RS-485 modules available on Ebay or Amazon. Much simpler than building your own circuit.
They look like this:
answered Nov 20, 2018 at 15:38
The MAX490 chip consists of DI (pin 3) and RO (pin 2) pins that connect to the Arduino TX and RX respectively. the rs-422 side of the chip consists of pin 5 (Y / T+), Pin 6 (Z / T-), pin 7 (B / R-) and pin 8 (A / R+)
http://arduinotronics.blogspot.com/2018/09/long-distance-serial-with-rs-422.html